链毒素诱导糖尿病对一碳循环和精子功能的影响
Farnaz Pouriayevali1, Marziyeh Tavalaee1, Fatemeh Kazeminasab2
1Department of Animal Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, Isfahan, Iran.
Cell journal
|February 14, 2024
概括
糖尿病通过破坏精子中的一碳循环 (1CC) 损害男性生育能力,导致DNA损伤和甲基化减少. 这项针对糖尿病小鼠模型的研究揭示了显著的1CC缺陷,这表明了改善生育能力的潜在治疗点.
科学领域:
- 生殖生物学 生殖生物学
- 内分泌学 在内分泌学.
- 代谢障碍 代谢障碍 代谢障碍
背景情况:
- 患有糖尿病的男性面临不孕症风险增加.
- 氧化损伤和精子甲基化减少表明一碳循环 (1CC) 受到损害.
研究的目的:
- 在1型和2型糖尿病的小鼠模型中研究一碳循环 (1CC) 缺陷.
主要方法:
- 在雄性小鼠中利用了链毒素诱导的1型和2型糖尿病模型.
- 评估了精子生成,DNA损伤,染色质甲基化和1CC标记物 (homocysteine,methionine,叶酸,B12).
主要成果:
- 糖尿病小鼠表现出受损的精子生成,增加的DNA损伤和减少的染色质甲基化.
- 一个碳循环 (1CC) 被显著扰乱,同类半氨酸水平升高,基本碳单位减少.
结论:
- 糖尿病明显影响丸的一碳循环 (1CC).
- 葡萄糖摄入不足和碳单位供应减少可能导致这种损伤.
- 针对精子葡萄糖吸收和甲基捐赠者的干预措施可能会改善糖尿病男性的生育能力,等待临床验证.
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